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+<script lang="tsx">
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+import { PropType, defineComponent, ref, computed, unref, watch, onMounted } from 'vue'
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+import { ElForm, ElFormItem, ElRow, ElCol, ElTooltip } from 'element-plus'
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+import { componentMap } from './componentMap'
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+import { propTypes } from '@/utils/propTypes'
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+import { getSlot } from '@/utils/tsxHelper'
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+import {
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+ setTextPlaceholder,
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+ setGridProp,
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+ setComponentProps,
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+ setItemComponentSlots,
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+ initModel,
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+ setFormItemSlots
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+} from './helper'
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+import { useRenderSelect } from './components/useRenderSelect'
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+import { useRenderRadio } from './components/useRenderRadio'
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+import { useRenderCheckbox } from './components/useRenderCheckbox'
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+import { useDesign } from '@/hooks/web/useDesign'
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+import { findIndex } from '@/utils'
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+import { set } from 'lodash-es'
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+import { FormProps } from './types'
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+import { Icon } from '@/components/Icon'
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+import { FormSchema, FormSetPropsType } from '@/types/form'
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+
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+const { getPrefixCls } = useDesign()
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+
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+const prefixCls = getPrefixCls('form')
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+
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+export default defineComponent({
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+ name: 'Form',
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+ props: {
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+ // 生成Form的布局结构数组
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+ schema: {
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+ type: Array as PropType<FormSchema[]>,
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+ default: () => []
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+ },
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+ // 是否需要栅格布局
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+ isCol: propTypes.bool.def(true),
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+ // 表单数据对象
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+ model: {
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+ type: Object as PropType<Recordable>,
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+ default: () => ({})
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+ },
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+ // 是否自动设置placeholder
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+ autoSetPlaceholder: propTypes.bool.def(true),
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+ // 是否自定义内容
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+ isCustom: propTypes.bool.def(false),
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+ // 表单label宽度
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+ labelWidth: propTypes.oneOfType([String, Number]).def('auto')
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+ },
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+ emits: ['register'],
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+ setup(props, { slots, expose, emit }) {
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+ // element form 实例
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+ const elFormRef = ref<ComponentRef<typeof ElForm>>()
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+
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+ // useForm传入的props
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+ const outsideProps = ref<FormProps>({})
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+
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+ const mergeProps = ref<FormProps>({})
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+
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+ const getProps = computed(() => {
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+ const propsObj = { ...props }
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+ Object.assign(propsObj, unref(mergeProps))
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+ return propsObj
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+ })
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+
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+ // 表单数据
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+ const formModel = ref<Recordable>({})
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+
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+ onMounted(() => {
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+ emit('register', unref(elFormRef)?.$parent, unref(elFormRef))
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+ })
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+
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+ // 对表单赋值
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+ const setValues = (data: Recordable = {}) => {
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+ formModel.value = Object.assign(unref(formModel), data)
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+ }
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+
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+ const setProps = (props: FormProps = {}) => {
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+ mergeProps.value = Object.assign(unref(mergeProps), props)
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+ outsideProps.value = props
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+ }
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+
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+ const delSchema = (field: string) => {
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+ const { schema } = unref(getProps)
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+
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+ const index = findIndex(schema, (v: FormSchema) => v.field === field)
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+ if (index > -1) {
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+ schema.splice(index, 1)
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+ }
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+ }
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+
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+ const addSchema = (formSchema: FormSchema, index?: number) => {
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+ const { schema } = unref(getProps)
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+ if (index !== void 0) {
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+ schema.splice(index, 0, formSchema)
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+ return
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+ }
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+ schema.push(formSchema)
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+ }
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+
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+ const setSchema = (schemaProps: FormSetPropsType[]) => {
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+ const { schema } = unref(getProps)
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+ for (const v of schema) {
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+ for (const item of schemaProps) {
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+ if (v.field === item.field) {
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+ set(v, item.path, item.value)
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+ }
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+ }
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+ }
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+ }
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+
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+ const getElFormRef = (): ComponentRef<typeof ElForm> => {
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+ return unref(elFormRef) as ComponentRef<typeof ElForm>
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+ }
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+
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+ expose({
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+ setValues,
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+ formModel,
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+ setProps,
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+ delSchema,
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+ addSchema,
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+ setSchema,
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+ getElFormRef
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+ })
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+
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+ // 监听表单结构化数组,重新生成formModel
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+ watch(
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+ () => unref(getProps).schema,
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+ (schema = []) => {
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+ formModel.value = initModel(schema, unref(formModel))
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+ },
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+ {
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+ immediate: true,
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+ deep: true
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+ }
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+ )
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+
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+ // 渲染包裹标签,是否使用栅格布局
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+ const renderWrap = () => {
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+ const { isCol } = unref(getProps)
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+ const content = isCol ? (
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+ <ElRow gutter={20}>{renderFormItemWrap()}</ElRow>
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+ ) : (
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+ renderFormItemWrap()
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+ )
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+ return content
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+ }
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+
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+ // 是否要渲染el-col
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+ const renderFormItemWrap = () => {
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+ // hidden属性表示隐藏,不做渲染
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+ const { schema = [], isCol } = unref(getProps)
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+
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+ return schema
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+ .filter((v) => !v.hidden)
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+ .map((item) => {
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+ // 如果是 Divider 组件,需要自己占用一行
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+ const isDivider = item.component === 'Divider'
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+ const Com = componentMap['Divider'] as ReturnType<typeof defineComponent>
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+ return isDivider ? (
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+ <Com {...{ contentPosition: 'left', ...item.componentProps }}>{item?.label}</Com>
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+ ) : isCol ? (
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+ // 如果需要栅格,需要包裹 ElCol
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+ <ElCol {...setGridProp(item.colProps)}>{renderFormItem(item)}</ElCol>
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+ ) : (
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+ renderFormItem(item)
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+ )
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+ })
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+ }
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+
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+ // 渲染formItem
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+ const renderFormItem = (item: FormSchema) => {
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+ // 单独给只有options属性的组件做判断
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+ const notRenderOptions = ['SelectV2', 'Cascader', 'Transfer']
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+ const componentSlots = (item?.componentProps as any)?.slots || {}
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+ const slotsMap: Recordable = {
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+ ...setItemComponentSlots(unref(formModel), componentSlots)
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+ }
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+ if (
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+ item?.component !== 'SelectV2' &&
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+ item?.component !== 'Cascader' &&
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+ item?.componentProps?.options
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+ ) {
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+ slotsMap.default = () => renderOptions(item)
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+ }
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+
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+ const formItemSlots: Recordable = setFormItemSlots(slots, item.field)
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+ // 如果有 labelMessage,自动使用插槽渲染
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+ if (item?.labelMessage) {
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+ formItemSlots.label = () => {
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+ return (
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+ <>
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+ <span>{item.label}</span>
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+ <ElTooltip placement="right" raw-content>
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+ {{
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+ content: () => <span v-html={item.labelMessage}></span>,
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+ default: () => (
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+ <Icon
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+ icon="ep:warning"
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+ size={16}
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+ color="var(--el-color-primary)"
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+ class="ml-2px relative top-1px"
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+ ></Icon>
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+ )
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+ }}
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+ </ElTooltip>
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+ </>
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+ )
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+ }
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+ }
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+ return (
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+ <ElFormItem {...(item.formItemProps || {})} prop={item.field} label={item.label || ''}>
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+ {{
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+ ...formItemSlots,
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+ default: () => {
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+ const Com = componentMap[item.component as string] as ReturnType<
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+ typeof defineComponent
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+ >
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+
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+ const { autoSetPlaceholder } = unref(getProps)
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+
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+ return slots[item.field] ? (
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+ getSlot(slots, item.field, formModel.value)
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+ ) : (
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+ <Com
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+ vModel={formModel.value[item.field]}
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+ {...(autoSetPlaceholder && setTextPlaceholder(item))}
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+ {...setComponentProps(item)}
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+ style={item.componentProps?.style}
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+ {...(notRenderOptions.includes(item?.component as string) &&
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+ item?.componentProps?.options
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+ ? { options: item?.componentProps?.options || [] }
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+ : {})}
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+ >
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+ {{ ...slotsMap }}
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+ </Com>
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+ )
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+ }
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+ }}
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+ </ElFormItem>
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+ )
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+ }
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+
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+ // 渲染options
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+ const renderOptions = (item: FormSchema) => {
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+ switch (item.component) {
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+ case 'Select':
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+ const { renderSelectOptions } = useRenderSelect(slots)
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+ return renderSelectOptions(item)
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+ case 'Radio':
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+ case 'RadioButton':
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+ const { renderRadioOptions } = useRenderRadio()
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+ return renderRadioOptions(item)
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+ case 'Checkbox':
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+ case 'CheckboxButton':
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+ const { renderCheckboxOptions } = useRenderCheckbox()
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+ return renderCheckboxOptions(item)
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+ default:
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+ break
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+ }
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+ }
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+
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+ // 过滤传入Form组件的属性
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+ const getFormBindValue = () => {
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+ // 避免在标签上出现多余的属性
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+ const delKeys = ['schema', 'isCol', 'autoSetPlaceholder', 'isCustom', 'model']
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+ const props = { ...unref(getProps) }
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+ for (const key in props) {
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+ if (delKeys.indexOf(key) !== -1) {
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+ delete props[key]
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+ }
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+ }
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+ return props
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+ }
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+
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+ return () => (
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+ <ElForm
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+ ref={elFormRef}
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+ {...getFormBindValue()}
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+ model={props.isCustom ? props.model : formModel}
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+ class={prefixCls}
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+ >
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+ {{
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+ // 如果需要自定义,就什么都不渲染,而是提供默认插槽
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+ default: () => {
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+ const { isCustom } = unref(getProps)
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+ return isCustom ? getSlot(slots, 'default') : renderWrap()
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+ }
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+ }}
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+ </ElForm>
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+ )
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+ }
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+})
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+</script>
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+
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+<style lang="less" scoped>
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+.@{elNamespace}-form.@{namespace}-form .@{elNamespace}-row {
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+ margin-right: 0 !important;
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+ margin-left: 0 !important;
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+}
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+</style>
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